RE: JPO assess speed limiter implementaton issues?
Hi Matt,
The way you have it on the F4 is as good as any. The step may be a bit of a error on the double wall side maybe. On full size aircraft a static port directly on the fuselage works well if the surface ahead of the port is clean and a good boundary layer is present. In other words the pressure within the boundary layer is measured. Not an expert but it would seem that this may require calibration of some sort. The secret to good static pickup is to have smooth airflow around where the pickup is. If it is to work in all airframes without calibration the only way is with a bullet nosed pitot and four small crossholes about 2 - 2.5 of pitot diameter back. This is how our pitot is made and pretty much the same I think on the JC. Static within a fuselage is NO GOOD. On our RPV we plan on adding another static port for the differential pressure sensor. Our Hotspot testbed is easily capable of 250mph+ so speed limiting is in my opineon a good idea for the less than carefull....
Cheers
Andre Baird